Something here may help http://www.ultimatewindowssecurity.com/wiki/WindowsSecuritySettings/Filtering-Platform-Connection


>On a Windows Server 2008, where the security is at a much higher level, the Web site responds for images, the Web site responds for .aspx pages that are not using a connection with SQL Server but the Web site does not respond for all pages that have a need to establish a connection with SQL Server.
>
>The Event View has this in Security log:
>
>"The Windows Filtering Platform has blocked a connection."
>
>This is the detail:
>
>Application Information:
> Process ID: 4
> Application Name: System
>
>Network Information:
> Direction: Outbound
> Source Address: AddressOfTheWebServer
> Source Port: 53802
> Destination Address: AddressOfTheSQLServer
> Destination Port: 139
> Protocol: 6
>
>Filter Information:
> Filter Run-Time ID: 0
> Layer Name: Connect
> Layer Run-Time ID: 48
>
>I sent this to security and they said that only port 1433 has to be opened from a Web server who wishes to communicate with SQL Server. Why am I still having this error then?